Electrochemical Cell with Two Layers Cathode for NO Decomposition

被引：17

作者：

Bredikhin, S. ^{[1
]}

Maeda, K. ^{[1
]}

Awano, M. ^{[2
]}

机构：

[1] FCRA, Synergy Ceram Lab, Moriyama Ku, Nagoya, Aichi 4638687, Japan

[2] NIRIN, Moriyama Ku, Nagoya, Aichi 4638687, Japan

来源：

IONICS | 2001年 / 7卷 / 1-2期

关键词：

Microstructure; Zirconia; Ionic Conductor; Sinter Temperature; Electrochemical Cell;

D O I：

10.1007/BF02375476

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

An electrochemical cell composed of an yttria-stabilized zirconia disk and two layers cathode was used for nitrogen monoxide decomposition. It was found that covering the Pt cathode by a mixture of oxygen ionic conductor (YSZ) and electronic conductor (NiO) leads to enhancement of the performance of the electrochemical cell for NO(x) decomposition in the presence of excess oxygen. The decomposition activity was measured for the one-compartment cell oxidel(cathode) vertical bar YSZ vertical bar( anode) by applying a DC voltage lower than 3.7 V in the temperature range 550700 degrees C. The microstructure of the YSZ-NiO mixed oxide electrodes was investigated in dependence of the cell operating condition and the working electrode sintering temperature. The correlation between the microstructure of the mixed oxide electrode and conversion rate of NO was studied. The phenomenon of self-optimization of the microstructure of the NiO-YSZ working electrode during the cell operation was observed and investigated.

引用

页码：109 / 115

页数：7

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